WO2019059100A1 - Unité de production de vibrations - Google Patents

Unité de production de vibrations Download PDF

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Publication number
WO2019059100A1
WO2019059100A1 PCT/JP2018/034041 JP2018034041W WO2019059100A1 WO 2019059100 A1 WO2019059100 A1 WO 2019059100A1 JP 2018034041 W JP2018034041 W JP 2018034041W WO 2019059100 A1 WO2019059100 A1 WO 2019059100A1
Authority
WO
WIPO (PCT)
Prior art keywords
piezoelectric element
diaphragm
external electrode
electrically connected
electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/034041
Other languages
English (en)
Japanese (ja)
Inventor
拓人 堀井
敦 江澤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Corp
Original Assignee
TDK Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TDK Corp filed Critical TDK Corp
Priority to US16/648,592 priority Critical patent/US11648585B2/en
Priority to CN201880052139.7A priority patent/CN111032238B/zh
Publication of WO2019059100A1 publication Critical patent/WO2019059100A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0207—Driving circuits
    • B06B1/0223—Driving circuits for generating signals continuous in time
    • B06B1/0238—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave
    • B06B1/0246—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave with a feedback signal
    • B06B1/0253—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave with a feedback signal taken directly from the generator circuit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0207—Driving circuits
    • B06B1/0215—Driving circuits for generating pulses, e.g. bursts of oscillations, envelopes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
    • B06B1/0611—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements in a pile
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
    • G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
    • G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
    • G06F3/04144—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position using an array of force sensing means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/101—Piezoelectric or electrostrictive devices with electrical and mechanical input and output, e.g. having combined actuator and sensor parts
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/802—Circuitry or processes for operating piezoelectric or electrostrictive devices not otherwise provided for, e.g. drive circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/40—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups with testing, calibrating, safety devices, built-in protection, construction details

Definitions

  • the present disclosure relates to a vibratory unit.
  • Patent Document 1 discloses a vibration unit including a sheet-like piezoelectric element that detects pressure when an overlay is pressed with a finger and generates tactile vibration in the overlay.
  • the voltage value (for example, several tens to several hundreds volts) of the drive voltage applied in the drive circuit is larger than the voltage value (for example, several volts) of the electromotive force in the sensor circuit, and the high voltage current of the drive circuit It is necessary to avoid the situation of flowing into the sensor circuit.
  • a switching circuit for switching between the sensor circuit and the drive circuit or separately provide other protective circuits.
  • a control circuit for controlling the vibration unit Can be a contributing factor.
  • the present disclosure aims to provide a vibration unit in which the control circuit is simplified.
  • a vibration unit includes: a sheet-like first piezoelectric element; a sheet-like second piezoelectric element extending parallel to the first piezoelectric element; A vibration device having a diaphragm in which a first piezoelectric element is disposed and a second piezoelectric element is disposed on the other main surface, and a sensor circuit that detects an electromotive force generated in the first piezoelectric element; And a control unit having a drive circuit for applying a drive voltage to the second piezoelectric element when an electromotive force is detected in the sensor circuit, each of the first piezoelectric element and the second piezoelectric element being The piezoelectric body is sandwiched between the first external electrode and the second external electrode in the thickness direction of the diaphragm, and the sensor circuit has a first pole that is the first exterior of the first piezoelectric element.
  • the second electrode is electrically connected to the electrode and the second external electrode of the first piezoelectric element
  • the drive circuit is electrically connected
  • the vibration unit only a relatively small voltage is applied to the sensor circuit due to the electromotive force generated due to the deflection of the first piezoelectric element, and the drive circuit is applied to the second piezoelectric element. Only a relatively large drive voltage is added. Therefore, it is not necessary to separately provide a switching circuit or the like in the control unit that controls the vibration unit, and the control unit can be configured by a simple control circuit.
  • the diaphragm is made of a conductive material, and the second external electrode of the first piezoelectric element and the second of the second piezoelectric element located on the diaphragm side
  • the external electrode is electrically connected to the diaphragm, and the second pole of the sensor circuit and the second pole of the drive circuit are connected to the diaphragm.
  • the degree of freedom in design is improved with respect to the connection point of the second pole of the sensor circuit and the second pole of the drive circuit.
  • the vibration unit comprises a plate-like first case portion extending parallel to the diaphragm and a plate-like second case portion extending parallel to the first case portion.
  • the vibration device is further disposed on the second case portion side of the first case portion and supported by the second case portion, and the first external electrode of the first piezoelectric element is the first case portion Contact with the main surface on the side of the second case portion.
  • the drive circuit can expand and contract the second piezoelectric element to generate vibration in the diaphragm.
  • the outer shape of the second piezoelectric element is larger than the outer shape of the first piezoelectric element when viewed in the thickness direction of the diaphragm.
  • the amount of expansion and contraction of the second piezoelectric element when the drive voltage is applied by the drive circuit becomes larger.
  • the vibration amplitude of the diaphragm accompanying the expansion and contraction of the piezoelectric element can be further enhanced.
  • a vibration unit is provided in which the control circuit is simplified.
  • FIG. 1 is a schematic perspective view showing the back surface of the vibration unit according to the embodiment.
  • FIG. 2 is an exploded perspective view of the vibration unit shown in FIG.
  • FIG. 3 is a schematic perspective view showing the surface of the vibration unit shown in FIG.
  • FIG. 4 is a cross-sectional view taken along line IV-IV of the vibration unit of FIG.
  • FIG. 5 is a cross-sectional view of the vibration unit of FIG. 3 taken along line VV.
  • FIG. 6 is a diagram showing a specific configuration of the vibration device and an electrical connection between the vibration device and the control unit.
  • FIG. 7 is an enlarged view of an essential part of FIG.
  • FIG. 8 is a diagram showing a circuit configuration of a vibration unit according to the prior art.
  • the vibration unit 10 includes a plate-like first case member (first case portion) 20.
  • the first case member 20 is configured such that one main surface 20a can be touched by, for example, a human finger or the like.
  • a plurality of contact areas 22 are provided on one main surface 20 a of the first case member 20.
  • nine square contact regions 22 are arranged in a matrix on the main surface 20 a of the first case member 20.
  • the first case member 20 has a relatively low elastic modulus such that sufficient bending deformation occurs when contacting the contact area 22.
  • the first case member 20 can be made of, for example, a resin material such as polycarbonate.
  • one of the alignment directions of the contact areas 22 of the main surface 20a of the first case member 20 is referred to as X direction, the other as Y direction, and the thickness direction of the first case member 20 as Z direction. Name.
  • the vibration unit 10 includes a plate-like second case member (second case portion) 40.
  • the second case member 40 is spaced apart from the first case member 20 by a predetermined distance, and extends parallel to the first case member 20.
  • regions corresponding to the contact regions 22 of the first case member 20 are opened, and the opened portion is a through hole 42. That is, as in the contact region 22, each through hole 42 has a square shape as viewed from the Z direction.
  • the second case member 40 can be made of, for example, a resin material such as acrylic.
  • a plurality of vibration devices 36 are disposed on the other main surface 20 b of the first case member 20 between the first case member 20 and the second case member 40.
  • nine vibration devices 36 are disposed at positions corresponding to the contact area 22 and the through holes 42.
  • Each vibrating device 36 is configured of a pair of piezoelectric elements 32A and 32B and a vibrating plate 34.
  • the diaphragm 34 is a rectangular plate-like member having a long side and a short side.
  • the diaphragm 34 is made of a conductive material, and can be made of, for example, a nickel alloy or stainless steel.
  • the diaphragm 34 can be composed of a single layer or a plurality of layers. As shown in FIG. 2, the plurality of diaphragms 34 are arranged such that the long side direction is the same, that is, the X direction.
  • Each diaphragm 34 is designed such that its short side length d1 is shorter than the length L of one side of the square of the through hole 42, as shown in FIG. 4, and as shown in FIG.
  • the long side length d2 is designed to be longer than the length L of one side of the through hole 42.
  • Each diaphragm 34 faces the edge 42 a of the through hole 42 only at both short sides of the diaphragm 34.
  • Each of the pair of piezoelectric elements 32A and 32B is in the form of a sheet, and is disposed so as to sandwich the diaphragm 34.
  • one piezoelectric element hereinafter also referred to as a first piezoelectric element
  • the other piezoelectric element hereinafter a second piezoelectric element (Also referred to as “.”) 32B is disposed on the other main surface 34b of the diaphragm 34.
  • Each of the pair of piezoelectric elements 32A, 32 is arranged at the center position of the diaphragm 34, that is, at the middle position in the long side direction and the short side direction of the diaphragm 34.
  • each piezoelectric element 32A, 32B sandwiches the plate-like piezoelectric member 37 between the first external electrode 38a and the second external electrode 38b in the thickness direction (Z direction) of the diaphragm 34.
  • the piezoelectric body 37 may have a single-layer structure of the piezoelectric layer, or may have a multilayer structure in which the piezoelectric layer and the internal electrode layer are alternately stacked in the Z direction.
  • the second external electrodes 38b of the piezoelectric elements 32A and 32B are located on the diaphragm 34 side, and are electrically and physically connected to the diaphragm 34 via the conductive layer 39.
  • the first external electrode 38a of the first piezoelectric element 32A is in direct contact with the main surface 20b on the second case member side of the first case member 20 on the entire surface.
  • the first piezoelectric element 32 ⁇ / b> A is electrically connected to the sensor circuit 61 included in the control unit 60.
  • the first pole 62 of the sensor circuit 61 is electrically connected to the first external electrode 38a of the first piezoelectric element 32A
  • the second pole 63 of the sensor circuit 61 is connected to the diaphragm 34 It is connected and electrically connected to the second external electrode 38b of the first piezoelectric element 32A through the diaphragm 34.
  • a potential difference is generated between the pair of external electrodes 38a and 38b according to the electromotive force when displacement such as bending occurs in the piezoelectric body 37.
  • the sensor circuit 61 of the control unit 60 is configured to be able to detect a potential difference generated between the external electrodes 38a and 38b due to the electromotive force of the first piezoelectric element 32A described above.
  • the second piezoelectric element 32 ⁇ / b> B is electrically connected to the drive circuit 64 included in the control unit 60. Specifically, the first pole 65 of the drive circuit 64 is electrically connected to the first external electrode 38 a of the second piezoelectric element 32 B, and the second pole 66 of the drive circuit 64 is connected to the diaphragm 34. It is connected and electrically connected to the second external electrode 38 b of the second piezoelectric element 32 B via the diaphragm 34.
  • the second piezoelectric element 32B expands and contracts in the surface direction (direction parallel to the XY plane) when a predetermined voltage is applied between the pair of external electrodes 38a and 38b.
  • the drive circuit 64 of the control unit 60 applies a drive voltage between the external electrodes 38a and 38b of the second piezoelectric element 32B to expand and contract the second piezoelectric element 32B. It is configured to be able to
  • the diaphragm 34 bonded to the second piezoelectric element 32B bends in the Z direction.
  • the diaphragm 34 since the diaphragm 34 has a rectangular shape and the long side length d2 is longer than the short side length d1, the diaphragm 34 is bent such that the long side is bent more than the short side.
  • the drive circuit 64 periodically applies a voltage between the external electrodes 38a and 38b of the second piezoelectric element 32B, expansion and contraction in a direction parallel to the XY plane in the piezoelectric body 37 of the second piezoelectric element 32B is repeated. Accordingly, the diaphragm 34 is repeatedly bent in the Z direction, and as a result, vibration in the Z direction occurs in the vibrating device 36.
  • the diaphragm 34 since the diaphragm 34 has a rectangular shape and the long side length d2 is longer than the short side length d1, a vibration with which a large amplitude can be obtained in the long side direction (X direction) occurs.
  • the control unit 60 can be configured by a circuit including a CPU and various electric elements.
  • the bonding unit 50 is made of, for example, a double-sided tape or a bonding material such as an ultraviolet curing adhesive. Adhesive portion 50 may be formed, for example, around through hole 42. The bonding portion 50 is formed apart from the diaphragm 34 so as not to inhibit the vibration of the diaphragm 34 of the vibrating device 36.
  • the control unit 60 uses the drive circuit 64 to drive the vibration device 36 corresponding to the touched contact area 22.
  • a periodic drive voltage for example, a drive voltage having a waveform such as a rectangular wave or a triangular wave
  • the drive circuit 64 is applied from the drive circuit 64 to the vibration device 36.
  • vibrations in the Z direction occur in the diaphragm 34 of the vibrating device 36, and the contact region 22 of the first case member 20 corresponding to the vibrating device 36 vibrating along with it also vibrates in the Z direction. That is, only the contact area 22 in which the bending has occurred vibrates selectively. At this time, the contact area 22 is vibrated to such an extent that it can be touched with a finger or the like.
  • the control unit 60 may detect the vibration of the diaphragm 34 when the drive circuit 64 drives the second piezoelectric element 32B by the first piezoelectric element 32A and the sensor circuit 61. In this case, when the drive circuit 64 drives the second piezoelectric element 32B, the control unit 60 can confirm (self-check) whether the diaphragm 34 is actually vibrating. Such self-checking can detect a failure or malfunction of the drive circuit 64 and the second piezoelectric element 32B.
  • the first case member 20 may be designed to have a relatively low modulus of elasticity so that a sufficient amount of deflection occurs in the contact area 22 and the vibrations of the vibrating device 36 are efficiently transmitted.
  • the second case member 40 may be designed to have a relatively high modulus of elasticity to support the vibrating device 36.
  • the elastic coefficient of the first case member 20 is designed to be lower than the elastic coefficient of the second case member 40.
  • each of the first piezoelectric element 32A and the second piezoelectric element 32B sandwiches the piezoelectric body 37 with the first external electrode 38a and the second external electrode 38b in the Z direction.
  • the first pole 62 is electrically connected to the first external electrode 38a of the first piezoelectric element 32A
  • the second pole 63 is the first
  • the drive circuit 64 is electrically connected to the second external electrode 38b of the piezoelectric element 32A via the diaphragm 34
  • the drive circuit 64 is electrically connected to the first external electrode 38a of the second piezoelectric element 32B.
  • the second pole 66 is electrically connected to the second external electrode 38b of the second piezoelectric element 32B via the diaphragm 34.
  • the vibration unit 10 only a relatively small voltage associated with the electromotive force generated due to the deflection of the first piezoelectric element 32A is applied to the sensor circuit 61. Further, only a relatively large drive voltage applied to the second piezoelectric element 32B is added to the drive circuit 64. Therefore, it is not necessary to separately provide a switching circuit or the like in the control unit 60 that controls the vibration unit 10, and the control unit 60 can be configured by a simple control circuit.
  • the second pole 63 of the sensor circuit 61 and the second pole 66 of the drive circuit 64 are connected to the second outer electrode 38b of the first piezoelectric element 32A and the second outer electrode 38b of the second piezoelectric element 32B. It is also good. However, as shown in FIG. 6, when the exposed area of the second external electrode 38b is small, the connection may be difficult. In that case, it is conceivable to use the diaphragm 34 capable of securing a relatively large exposed area as a connection point.
  • the diaphragm 34 is made of a material having conductivity, and conduction between the diaphragm 34 and the second external electrode 38 b is used to use the diaphragm 34 as a connection point with the second electrodes 63 and 66. In this case, the degree of freedom in design of connection points is improved.
  • the vibration unit 10 can be designed such that the outer shape of the second piezoelectric element 32B is larger than the outer shape of the first piezoelectric element 32A when viewed in the Z direction.
  • the amount of expansion and contraction of the second piezoelectric element 32B when the drive voltage is applied by the drive circuit 64 is large as compared with the case where the outer shape of the second piezoelectric element 32B is equal to the outer shape of the first piezoelectric element 32A.
  • the through hole provided in the second case member may be a recessed portion that is recessed to the side away from the diaphragm as long as a space that allows bending of the diaphragm is secured.
  • vibration unit 20 first case member 32A first piezoelectric element 32B second piezoelectric element 37 piezoelectric body 38a first external electrode 38b second external electrode 34 diaphragm 36 vibration device 40 second case member 60 control unit 61 Sensor circuit 64 drive circuit

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • User Interface Of Digital Computer (AREA)

Abstract

La présente invention concerne une unité de production de vibrations (10) dans laquelle, pour un circuit de détection (61) d'une unité de commande (60), une première électrode (62) est connectée électriquement à une première électrode externe (38a) d'un premier élément piézoélectrique (32A), et une seconde électrode (63) est connectée électriquement à une seconde électrode externe (38b) du premier élément piézoélectrique (32A). Pour un circuit d'entraînement (64) de l'unité de commande (60), une première électrode (65) est connectée électriquement à une première électrode externe (38a) d'un second élément piézoélectrique (32B), et une seconde électrode (66) est connectée électriquement à une seconde électrode externe (38b) du second élément piézoélectrique (32B). Seule une tension comparativement faible, accompagnant l'énergie produite en raison des contraintes se produisant dans le premier élément piézoélectrique (32A), est appliquée au circuit de détection (61). Seule une tension d'entraînement comparativement importante, appliquée au second élément piézoélectrique (32B), est appliquée au circuit d'entraînement (64). Par conséquent, il n'est pas nécessaire de prévoir un circuit de commutation séparé et similaires dans l'unité de commande (60), et l'unité de commande (60) peut comprendre un simple circuit de commande.
PCT/JP2018/034041 2017-09-25 2018-09-13 Unité de production de vibrations Ceased WO2019059100A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US16/648,592 US11648585B2 (en) 2017-09-25 2018-09-13 Vibration unit
CN201880052139.7A CN111032238B (zh) 2017-09-25 2018-09-13 振动组件

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-183978 2017-09-25
JP2017183978A JP7110570B2 (ja) 2017-09-25 2017-09-25 振動ユニット

Publications (1)

Publication Number Publication Date
WO2019059100A1 true WO2019059100A1 (fr) 2019-03-28

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Application Number Title Priority Date Filing Date
PCT/JP2018/034041 Ceased WO2019059100A1 (fr) 2017-09-25 2018-09-13 Unité de production de vibrations

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US (1) US11648585B2 (fr)
JP (1) JP7110570B2 (fr)
CN (1) CN111032238B (fr)
WO (1) WO2019059100A1 (fr)

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WO2021205748A1 (fr) * 2020-04-09 2021-10-14 アルプスアルパイン株式会社 Dispositif d'entrée
WO2023228703A1 (fr) * 2022-05-24 2023-11-30 株式会社村田製作所 Dispositif de vibration et appareil électronique
WO2025249324A1 (fr) * 2024-05-30 2025-12-04 パナソニックＩｐマネジメント株式会社 Mécanisme de détection tactile, système de détermination tactile et dispositif électronique

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WO2006112092A1 (fr) * 2005-04-06 2006-10-26 Toyota Jidosha Kabushiki Kaisha Manchon de stabilisateur
JP7067530B2 (ja) 2019-05-24 2022-05-16 株式会社村田製作所 振動装置
JP7379923B2 (ja) * 2019-08-09 2023-11-15 Tdk株式会社 振動ユニット
JP7331549B2 (ja) * 2019-08-09 2023-08-23 Tdk株式会社 振動ユニットおよびその駆動方法
JP2024159310A (ja) * 2023-04-28 2024-11-08 パナソニックＩｐマネジメント株式会社 接触判定システム、接触判定用モジュール及び電子機器
JP2024159312A (ja) * 2023-04-28 2024-11-08 パナソニックＩｐマネジメント株式会社 接触判定システム、接触判定用モジュール及び電子機器
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US11648585B2 (en) 2023-05-16

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